The 11583A attenuator set contains 4 8493C attenuators with 3, 6, 10 and 20 dB in a walnut box. The connections are of type APC 3.5 with a maximum frequency of 26.5 GHz. These attenuators are ideally suited for the calibration of devices or for calibration laboratories - generally above all where an exact attenuation and a very precise standing wave ratio is required.